Cisco Talos Intelligence Blog

November 17, 2022 08:11

Get a Loda This: LodaRAT meets new friends

* LodaRAT samples were deployed alongside other malware families, including RedLine and Neshta. * Cisco Talos identified several variants and altered versions of LodaRAT with updated functionality have been seen in the wild. * Changes in these LodaRAT variants include new f

November 1, 2022 15:11

Threat Advisory: High Severity OpenSSL Vulnerabilities

In late October two new buffer overflow vulnerabilities, CVE-2022-3602 and CVE-2022-3786, were announced in OpenSSL versions 3.0.0 to 3.0.6. These vulnerabilities can be exploited by sending an X.509 certificate with a specially crafted email address, potentially causing a buffer

September 30, 2022 17:09

Threat Advisory: Microsoft warns of actively exploited vulnerabilities in Exchange Server

Even organizations that use Exchange Online may still be affected if they run a hybrid server.

June 21, 2022 07:06

Avos ransomware group expands with new attack arsenal

By Flavio Costa, * In a recent customer engagement, we observed a month-long AvosLocker campaign. * The attackers utilized several different tools, including Cobalt Strike, Sliver and multiple commercial network scanners. * The initial ingress point in this incident was a pa

June 3, 2022 20:06

Threat Advisory: Atlassian Confluence zero-day vulnerability under active exploitation

Cisco Talos is monitoring reports of an actively exploited zero-day vulnerability in Confluence Data Center and Server. Confluence is a Java-based corporate Wiki employed by numerous enterprises. At this time, it is confirmed that all supported versions of Confluence are affecte

June 1, 2022 10:06

Threat Advisory: Zero-day vulnerability in Microsoft diagnostic tool MSDT could lead to code execution

A recently discovered zero-day vulnerability in the Microsoft Windows Support Diagnostic Tool (MSDT) made headlines over the past few days. CVE-2022-30190, also known under the name "Follina," exists when MSDT is called using the URL protocol from an application, such as Microso

May 10, 2022 15:05

Threat Advisory: Critical F5 BIG-IP Vulnerability

Summary A recently disclosed vulnerability in F5 Networks' BIG-IP could allow an unauthenticated attacker to access the BIG-IP system to execute arbitrary system commands, create and delete files, disable services and could lead to additional malicious activity. This vulnerabil

May 5, 2022 08:05

Mustang Panda deploys a new wave of malware targeting Europe

* In February 2022, corresponding roughly with the start of the Russian Invasion of Ukraine, Cisco Talos began observing the China-based threat actor Mustang Panda conducting phishing campaigns against European entities, including Russian organizations. Some phishing messages co

April 21, 2022 08:04

TeamTNT Targeting AWS, Alibaba

By Darin Smith. * TeamTNT is actively modifying its scripts after they were made public by security researchers. * These scripts primarily target Amazon Web Services, but can also run in on-premise, container, or other forms of Linux instances. * The group's payloads include